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Finding the Fourth Proportional to 89,661.25, 123,732.53 and 49,917.25

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Solution

The fourth proportional to 89,661.25, 123,732.53 and 49,917.25 is: 68,885.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,661.25 : 123,732.53 = 49,917.25 : x
  2. Step 2: Convert to fraction form
    89,661.25/123,732.53 = 49,917.25/x
  3. Step 3: Cross multiply
    89,661.25x = 123,732.53 × 49,917.25
  4. Step 4: Simplify right side
    89,661.25x = 6,176,387,633.14
  5. Step 5: Solve for x
    x = 6,176,387,633.14/89,661.25
  6. Step 6: Final answer
    x = 68,885.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.